Biscuit wrote:Too many of these "challenges" can be done wity nothing more than Haunt, Black Claw and Swarm/Hunting Party.

True, try the Heliosus in 5 round challenge ... Haunt might not do it in 5 rounds.
More importantly, feel free to come up with your own challenge. Creating a challenge is somethings harder than solving one and requires more creativity as well.